Zombie Holocaust (Italian: Zombi Holocaust) is a 1980 Italian horror film directed by Marino Girolami. The film is about a team of scientists who follow a trail of corpses in New York to a remote Indonesian island where they meet a mad doctor (Donald O'Brien) who performs experiments on both the living and dead in his laboratory. The team face both zombies and cannibals in an attempt to stop the doctor. The film was re-edited and released theatrically in the United States in 1982 under the title Doctor Butcher M.D.